XML 168 R141.htm IDEA: XBRL DOCUMENT v3.21.1
Loans, borrowings, leases, cash and cash equivalents and short-term investments - Reconciliation of debt to cash flows arising from financing activities (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Loans and borrowings      
Loans and borrowings at beginning of the period $ 13,056    
Additions 6,800 $ 3,142 $ 1,225
Repayments (6,064) (5,417) $ (7,841)
Interest paid 755    
Cash flow from financing activities (19)    
Effect of exchange rate (414)    
Interest accretion 737    
Non-cash changes 323    
Loans and borrowings at end of the period 13,360 13,056  
Quoted in the secondary market      
Loans and borrowings      
Loans and borrowings at beginning of the period 7,954    
Additions 1,500    
Repayments (243)    
Interest paid 556    
Cash flow from financing activities 701    
Effect of exchange rate (140)    
Interest accretion 531    
Non-cash changes 391    
Loans and borrowings at end of the period 9,046 7,954  
Debt contracts in Brazil      
Loans and borrowings      
Loans and borrowings at beginning of the period 1,535    
Repayments (294)    
Interest paid 60    
Cash flow from financing activities (354)    
Effect of exchange rate (271)    
Interest accretion 49    
Non-cash changes (222)    
Loans and borrowings at end of the period 959 1,535  
Debt contracts in the international markets      
Loans and borrowings      
Loans and borrowings at beginning of the period 3,567    
Additions 5,300    
Repayments (5,527)    
Interest paid 139    
Cash flow from financing activities (366)    
Effect of exchange rate (3)    
Interest accretion 157    
Non-cash changes 154    
Loans and borrowings at end of the period $ 3,355 $ 3,567